oj.uz

Submission #472341

# Submission time Handle Problem Language Result Execution time Memory
472341 2021-09-13T12:01:15 Z elgamalsalman Toll (BOI17_toll) C++14
39 / 100
 3000 ms 10172 KB 
#include <bits/stdc++.h>

using namespace std;

#define fi first
#define se second

typedef long long ll;
typedef pair<ll, ll> ii;
typedef vector<ll> vi;
typedef vector<ii> vii;
typedef vector<vii> vvii;

ll k, n, m, o, dp[50050];
vvii  adj;

void getToll(ll u, ll v) {
  //cerr << "// getToll(" << u << ", " << v << ")\n";
  if (dp[u] != -1) return;
  if (u == v) { dp[u] = 0; return; }
  if (u/k >= v/k) { dp[u] = 1e10; return; }

  //if (u == 1) cerr << "// check1\n";

  ll minToll = 1e10;
  for (ii edge : adj[u]) {
    //if (u == 1) cerr << "// check2 {" << edge.fi << ", " << edge.se << "}\n";
    getToll(edge.fi, v);
    if (dp[edge.fi] >= 1e10) continue;
    ll currToll = dp[edge.fi] + edge.se;
    if (currToll < minToll) minToll = currToll;
  }

  dp[u] = minToll;
  //cerr << "// " <<  dp[u] << '\n';
}

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);

  cin >> k >> n >> m >> o;
  adj.assign(n + 20, vii());
  for (ll i = 0; i < m; i++) {
    ll a, b, t;
    cin >> a >> b >> t;
    adj[a].push_back({b, t});
  }
  
  for (ll i = 0; i < o; i++) {
    memset(dp, -1, sizeof dp);
    ll a, b;
    cin >> a >> b;
    getToll(a, b);
    cout << (dp[a] >= 1e10 ? -1 : dp[a]) << '\n';
  }
}

Subtask #1
0 / 7.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3077 ms 7508 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3074 ms 5444 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 588 KB Output is correct
2 Correct 1 ms 588 KB Output is correct
3 Correct 1 ms 588 KB Output is correct
4 Correct 1 ms 588 KB Output is correct
5 Correct 1 ms 588 KB Output is correct
6 Correct 2 ms 716 KB Output is correct
7 Correct 4 ms 844 KB Output is correct
8 Correct 5 ms 972 KB Output is correct
9 Correct 4 ms 844 KB Output is correct
10 Correct 29 ms 4548 KB Output is correct
11 Correct 128 ms 7492 KB Output is correct
12 Correct 133 ms 9092 KB Output is correct
13 Correct 169 ms 9792 KB Output is correct
14 Correct 146 ms 8004 KB Output is correct
15 Correct 81 ms 4984 KB Output is correct
16 Correct 69 ms 4904 KB Output is correct

Subtask #4
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 588 KB Output is correct
2 Correct 1 ms 588 KB Output is correct
3 Correct 1 ms 588 KB Output is correct
4 Correct 1 ms 588 KB Output is correct
5 Correct 1 ms 588 KB Output is correct
6 Correct 2 ms 716 KB Output is correct
7 Correct 4 ms 844 KB Output is correct
8 Correct 5 ms 972 KB Output is correct
9 Correct 4 ms 844 KB Output is correct
10 Correct 29 ms 4548 KB Output is correct
11 Correct 128 ms 7492 KB Output is correct
12 Correct 133 ms 9092 KB Output is correct
13 Correct 169 ms 9792 KB Output is correct
14 Correct 146 ms 8004 KB Output is correct
15 Correct 81 ms 4984 KB Output is correct
16 Correct 69 ms 4904 KB Output is correct
17 Correct 1843 ms 7896 KB Output is correct
18 Correct 1 ms 588 KB Output is correct
19 Correct 1 ms 588 KB Output is correct
20 Correct 1 ms 588 KB Output is correct
21 Correct 1 ms 588 KB Output is correct
22 Correct 1 ms 588 KB Output is correct
23 Correct 49 ms 716 KB Output is correct
24 Correct 69 ms 880 KB Output is correct
25 Correct 88 ms 940 KB Output is correct
26 Correct 81 ms 892 KB Output is correct
27 Correct 126 ms 4460 KB Output is correct
28 Correct 2543 ms 9540 KB Output is correct
29 Correct 2966 ms 10172 KB Output is correct
30 Correct 1727 ms 7736 KB Output is correct

Subtask #5
0 / 44.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3077 ms 7508 KB Time limit exceeded
2 Halted 0 ms 0 KB -